Comment Re:Not entirely clear. (Score 1) 194
Sounds like it's time for a major browser to implement a default feature (so it becomes common as of the next update):
"Return opaque white canvas unless the user instructs otherwise."
Because I can't think of any good reason why the default should be "Return valid canvas" (tho "Ask" might also be a good setting).
I foresee the next step being websites that refuse to speak to you until they receive something they think is a valid canvas... at that point we'd want to add "Return random canvas" where "random" means "made up of common-as-dirt elements so it looks tolerably real".